Also found in: Thesaurus, Medical, Encyclopedia, Wikipedia.
A white poisonous glycoside, C29H44O12, extracted from the seeds of certain African trees of the genera Strophanthus and Acokanthera, that is used as a dart poison in some parts of Africa and has been used to treat congestive heart failure.
[From French ouabaïo, from Somali wabayo.]
(Elements & Compounds) a poisonous white crystalline glycoside extracted from certain trees and used as a heart stimulant and, by some African tribes, on poison darts. Formula: C29H44O12.8H2O
[C19: from French ouabaïo, from Somali waba yo native name of tree]
a white crystalline glycoside, C29H44O2, extracted from the seeds or wood of certain African trees and used as a poison on the tips of arrows or in medicine as a heart stimulant.
[1890–95 < French ouaba(ïo) (< Somali waabayyo arrow poison) + -in1]